Question: When did Rolf-Dieter Heuer stop being the director of CERN?
Paraphrase: Rolf-Dieter Heure left the position of director of CERN in what year?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q42944 p:P1037 ?s . ?s ps:P1037 wd:Q65092 . ?s pq:P582 ?value}